Rmt Limited

Pease Windamatic Systems, Inc.

Timothy K Pease

Donald L Kammeyer

Cedric L Bricker

Improvements in coil placing tooling of the type employed to insert prewound coils in the slots of dynamoelectric machine stator cores which tooling has an annular collet for maintaining wedge guides axially and radially in position, and the wedge guides in turn maintain blades radially in position are disclosed. The blades are readily removable and replaceable by releasing the collet for limited displacement relative to the blades, moving the collet to a position where selected wedge guides are freed axially and radially, removing certain of the selected wedge guides, and subsequently removing certain of the blades associated with the removed wedge guides. Improvements in reversible blades for such coil placing tooling are also disclosed. Certain ones of the blades comprise an elongated blade of generally uniform cross-sectional configuration with a transverse support dowel receiving hole near each end. The blade is normally mounted in coil placing tooling by a dowel passing through one of those holes and with the convex surfaces facing radially inwardly toward one another. The blade may be removed from the dowel, reversed end-for-end and replaced in the coil placing tooling with the dowel passing through the transverse hole in the previously free end. In order to reduce damage to the coils, each free end has the convex portion relieved from the center of the hole toward the corresponding end of the blade. Typically about 0.008 to 0.010 is removed from the radially inner convex surface between the holes and the blade tips.

Coil inserting tooling with quick release collet

Improvements in coil placing tooling of the type employed to insert prewound coils in the slots of dynamoelectric machine stator cores. Certain ones of the blades comprise an elongated blade of generally uniform cross-sectional configuration which includes a convex portion having a series of: generally parallel grooves cut therein to define intervening coil contacting lands. As compared to conventional 'smooth' blades, these blades have only a portion of the area of contact with the coils and, therefor, only a fraction of the frictional resistance to coil insertion.

Coil inserting tooling blades

A blade replacement technique for removing and replacing the wedge guide, coil feeder and/or pusher blades of coil inserter tooling is disclosed. The tooling includes a circular array of coil feeder blades and a circular array of wedge guide blades, with the wedge guide blades being in face-to-face apposition with the feeder blades and being radially outwardly of the feeder blades. A collet encircles the wedge guide blades and has a first surface restraining an intermediate portion of each wedge guide blade against axial and radial displacement and second surface facing and spaced from each wedge guide blade and defining a clearance zone. Each wedge guide blade is supported and restrained at its proximal end by being received in an annular groove in a support plate. Each coil feeder blade has its proximal end received in a slotted ring and each feeder blade is axially restrained by a pin projecting radially outwardly in each slot. By raising the collet, a selected wedge guide blade may be lifted out of the annular groove and pivoted in the clearance space so that an associated feeder blade may be released from its connecting pin and axially removed from the collet. The associated wedge guide blade may then be axially removed from the collet.

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Kendallville, IN, United States of America

Timothy K Pease